Power Supply; Low-Voltage Power Supply - Brother HL-5130 Service Manual

CHAPTER 3 THEORY OF OPERATION
1.5

Power Supply

1.5.1

Low-voltage power supply

The power supply uses a switching regulation system to generate the regulated DC power
(+3.3V, +8V [non regulated] and +24V), which are converted from the AC line.
The regulated output and the production code of each power supply are listed below;
Regulated Output
+3.3V / 1.5A
+8V / 0.4A
+24V / 2.2A
For the circuit diagram of the low-voltage power supply PCB, see
VOLTAGE POWER SUPPLY PCB CIRCUIT DIAGRAM'
Fuse
Fuse
Lightning
Surge
Absorber
Line
Rectifier
Filter
Regulation
Regulation
Production Code
100V: MPW5806
200V: MPW5706
Heater
Circuit
Oscillator
24V
Circuit
3.3V
Circuit
Fig. 3-29
3-18
APPENDIX 11. or 12. 'LOW-
in this manual.
(Heater)
Thermal
Fuse
Lamp
Feedback
(Engin Circuit / Main Circuit)
24V
8V
3.3V